An electronic apparatus comprises antennas, a first radio communication unit which performs radio communication by a first communication system having an antenna switching function in response to a reception state of electronic waves when the first communication unit is connected to any one of the antennas, a second communication unit which performs radio communication by a second communication system different from the first system when the second communication unit is connected to any one of the antennas, a setting unit which sets priorities of connection to the antennas in the first and the second communication unit, and a connection unit which connects any one of the antennas to a radio communication unit high in priority and connects the antennas not connected to the communication unit high in priority to a radio communication unit low in priority on the basis of the priorities which is set by the setting unit.